jones



J. B. JONES. MACHINERY FOR STAMPING VESSELS PROM SHEET METAL.

No. 27,911. Patented Apr. 17, 1860 UNITE STATES PATENT OFFICE;- Y

J. B. JONES, or BROO LY new YORK.

,IMPROVED' MMHINE FORTORMlNG VESSELS or HEET METAL.

Specification forming part'bf Letters Patent No. 27,91 [,dated A pril 3; i880.

Toall whom it may 'concern.-

' 'Be itknown that I, J. B. Jones, of Brooking out Vessels from Sheet-Metal Plates; and

I do hereby declarethat the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, forming a part .of this specification, in which Figure l-represents a vertical cross-section, taken through my machine, showing the forming-block with the holding-ringin' an elevated position,with a metal plate laid over the counter-die box, ready to receive the pressure. Fig. 2 is a sectional elevation of the formingblock with the holding-ring brought down on the. counter-die box in a position to commence the operation-of forming or'st'amping. -These parts are also represented in this fi ure, in red lines, in their relative position, w en the vessel is completed in the die-box.

Similar letters of reference indicate corresponding parts in both figures.

This invention has for its object the stamping or forming out of a sheet of thin-metatsuch as tinned sheet-iron, brass, copper, &c.- vessels of any desirable shape, size, or descrip tion, so that they will be seamless. t

The invention is an improvement on the present process of drawing down or stamping vessels, such as oval, round, or square pans, very deep or very shallow, whereby the work can be all done at one and the same operation and with one die acting upon the blankpr blanks in. a corresponding counterdie. I am thus enabled to accomplish the work with great rapidity and .with less liability of injury to the metal than with the present slow method of sinking the metal at many separate operations with different dies.

My invention,.to this end, consists, first; in the employment of suitable dies and counterdiescorresponding-in' shape and sizeto the kind of work'to be performed,'and' in using with these in a novel manner a device, hereinafter to be des'cribed,which is brought down upon the blank so as to hold it with sufficient firmness on the counter-die bed to prevent it from puckering or gathering while the die is brought down and the metal is'formed into shape. At the same time this device does not vent itfrom gradually drawing or slipping over the edge or margin of the counter-die as the die descends into the counter-die, or the counterdie descends on the die, which would be the same thing. Still, it is preferable to fix the counterpart or intaglio'of the die to'the' be or base of the stamping-machine f It consists, secondly, in arranginga device, which I shall term the fbla'nk-holder, so as to work in suitablyadjustable guides, and to be acted upon with a reciprocating motion bya suitable. screw or other mechanical means in such a manner and in such relation to the die that said blank-holder will be the guide for thisdie, and conduct the 'same'to the work after the holder has been-brought down, and,

keep it in a firm central position with respect to the countertdie while it completesits operation of sinking or stamping the metal plate, as 'will' be hereinafter described,

It consists; thirdly, in combining the die with the; concentric blank-holder, and the two with a; suitable mechanical arrangement, whereby the die will be kept completely within the blank-holder until the latter isbrought down hard upon the blank plate on the counter-die, combining and arranging therewith adjustable regulating-screws for controlling the movement of this die and blank-holder, as will be hereinafter described and represented.-' To enable those skilled in the art to fully understand my invention, I will proceed to describe its construction and operation.

In the drawings, A A represent, respecttained by four strong pillars'forming the frameimproved machine. v

0 Care two'perpendicular parallel guides, whichare made adjustable to or from each other by suitable set-screws. by which theycular enlargement, F, of the hollow screws hold the blank with sufficient rigidity to preively, the baseand table, which latter is sus work for supporting the several parts of my cap, D, andon top of this cap is fitted acir-fl shaft F, the eck of which enlargement, or that portion fitting into a recess in cap D, has an annular groove cut into it, and -by means of ,pins a a, which pass transversely through cap D and through this slot .inthe enlargement F, the-screw-shaft F is coupled to'the blank-holder and the screw, and the one is allowed to rotate within the ,other, and

. by this means the blank-holder may be raised 1*" passes up through a female screw cut through the center of the top of table A, and carries on its upper end a circular plate, G, having one or more-triangular projections on its surface near its circumference, which plate is keyed toaud turns with the. screw F. The: blank-holder D is hollowed out-for receiving a die, J, which die corresponds in shape and is slightly smaller than the cavity represented in the die-bed or eoun tor-die E. The cavity in' the blank-holder l). is of sufficient size and depth to allow the die to be drawn up within it, so that the bottom of the die will be ona plane with the lower edge of the blank-holder. This die J, which may be of any desirable shape, size, or pattern, is operated by a perpendicularscrewshaft, H, which passes up through the screw shaft F, to which the die is attached by pins 1) b, passing through it, and through an annular groove cut inthe end of itsscrew-shaft H, in a similar manner to the couplin'g'bf the blank-holder with its shaft. 1 T

On the top of the die J, and keyed to its shai't,;is a circular plate, K, furnished with clutch-teeth on its upper surface,'which, at a suitable time in the operation of the machine, will couple the die-shaf t with the blank-holder and its shaft, so that the parts will all have a simultaneous movement, either in their approach or receding movement from the counter-die. The screw-shaft H proceeds up through the cap F and screw-shaft F, a female screw being cut into theend of this shaft to receive H, and carries on its upper end,which is some distance above the end of screw F, a'large flywheel, L,.by which the machineis operated, and just under this'wheel L 'is arranged a circular: clutchplate, M, which is hung from wheel L by two rods, d d, whiehpass loosely through this wheel, and couple the two screwshafts together in their downward movement until the blank-holder is brought down on the blank, when three adjustable gage-pins, e 0,- will disengage this clutch-plate from the shaft F and allow'only the shaft H to descend, carrying with it the die J; and when the reverse movement takes place the die-holder will remain stationary until the die is drawn entirely up within it, when the clutch-plate Kwill en.- gage with the cap F and the die and blankholder will ascend together. Iirthis manner the blank-holder is brought down on the face of the counter-die before thedie begins to leave the blank-holder, and when the operation of sinking is completed the die will be drawn up within thedie-holder before the dieholder commences to leave the counter-die.-

The adjustable gage-screws'e e e, whichpass y .up through the table A, can be set so asto disengage or uneouple the two screw-shafts at any desirable moment for regulating .the pressure of the blank-holder ontthe counter-die bed.

At the same time they sort e to regulate the depth the die is to be driven" down into the counter-die, or rather the depth it is desired to formthe pans. v

The operation of this machine, with its several peculiarities, I will briefly describe, as follows: The counter-die should be firmly held in its proper place, and at the same time onpable of being removed from the machine,and another; of a different size or pattern intro duced in its-steadfor the various sizes and styles of vessels to be made. a flange proj eeting up 'froni'its outer edge for setting-the blanks in their proper place with relation to the descending die. vThis flange The hole shown is shown in the drawings; through the bottom of the counter die is merely to allow dust, chips, and air to therefrom. I

The blank represented by g in Fig. lot the drawings may be of any desirable sheet metal well annealed. These are placed on the coun-' ter-die, as shown by Fig. 1, when the several movable parts of the machine'are in the posi tion shown in this figure, and the wheelL is turned by any suitable and convenient means,

which operation carries down the die-J withits eccentric blank-holder D until this blankholder is firmly seated on the blank g, holding it down on the margin of the counter-die, and pressing on it all around, equally, butnot with forcesniiicient to injure the metal of the blahk, \Vhen this takes place, th'eblank-holder is no longer acted upon bythe clutch that bringsit down on the face of the counter-die; but the die J commences to descend alone, receiving a direct downward motion from the screwshnflg. but not a rotary. motion. Its bottom coma in contact with the blank and the operation of forming the-blank into shape commences.

The bottom of the die must press'upon the blank V centrally, so that the metalwill be drawn front under the die-holder equally and regularly,

and as the die sinks downinto the counter dio the blank will be drawn with the die, and the action of the blank-holder upon the blank begto keep the metal outside of the counterdie-flatand prevent it from crimping up-on puckering'. The metal of the blank by this means of carrying it down is not in'thof least injured, because the drawing takes'plam from the center, andthe metal is kept down on the margin of the counter-die by a'fi'rmly fixed ring or holder, before described, which constitutes the essential feature "of my inven- It should have i tion. \Vhen the die is forcedentirely down into the countendie, the movement of the shaft H is reversed and the die recedes from the counter-die until its bottom has cleared the lower edge of the blank-holder; then the clutch K engages with the hollow screw-shaft F, and

both are raised together a sufficient height to allow of the removal of the vessel from the counter-die and the introduction of another blank to repeat the operation of forming or stamping pans or other vessels from a single sheet of metal. \V hen thepans have thus been formed, they are removed to another machine for finishing.

For stamping vessels of a different size or shape, the die, counter-die, and blank-holder are to he removed and other suitable ones introduced in their stead. The guides 0 Care made adjustable for this purpose.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The employment of a blank-holder, D, or its equivalent arrangement in such a relation to the die and counter-die and operated in conjunction therewith that the blank of which the pan is to be forinedwill be held down on the counter-die and prevented from crimping while the die is carryingthe blank down, essentiall-y in the manner and for the purpose herein set forth. 7

2. The clutch M, arranged and combined with the die-screw shaft H, in combination with clutch-plate G of shaft F, and gagescrews 0, e a, for the purpose of causing the die and die-holder to descend together until the former comes in contact with the blank on the counter-die, when the die will descend alone the required distance;

.T. B. JONES.

Witnesses:

WM. THOMPSON, M. M. LIVINGSTON. 

